body {
	/* background: #EEEEEE; */
}


.navbar-brand img {

	/* 	width: 30px;
	height: 30px;
	
	position: relative;
	
	top: -7px;
	left: -20px; */

}


.navbar-brand {

	background-image: url(../img/logo.jpg);

	width: 50px;
	height: 50px;

	/* 大小，重复 ，位置 */
	background-size: 75%;
	background-repeat: no-repeat;
	background-position: center center;


}
